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Analysis method for microscopic morphology of surface porous oxidation film of aluminum foil

A technology of porous oxide film and analysis method, which is applied in the field of analysis of the microscopic morphology of the porous oxide film on the surface of aluminum foil. The effect of product quality

Active Publication Date: 2019-09-06
乌鲁木齐众荣电子材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for analyzing the microscopic morphology of the porous oxide film on the surface of aluminum foil, which is suitable for aluminum foil before chemical formation, solves the problem that porous alumina is not resistant to acid and alkali, and is not easy to peel off, and improves the accuracy of microscopic morphology analysis. Formation mechanism provides data support

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  • Analysis method for microscopic morphology of surface porous oxidation film of aluminum foil
  • Analysis method for microscopic morphology of surface porous oxidation film of aluminum foil
  • Analysis method for microscopic morphology of surface porous oxidation film of aluminum foil

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Effect test

Embodiment 1

[0035] The specific operation steps are as follows:

[0036] The raw material of sulfuric acid anodized aluminum foil is used as the pre-chemical formation aluminum foil, the surface layer of porous aluminum oxide has a micropore diameter of 5-20nm and a thickness of about 600-700nm.

[0037] (1) Cut the pre-chemical treatment aluminum foil into pre-chemical treatment aluminum foil samples with a width of 1.5 cm and a length of 5.0 cm, referred to as samples.

[0038] (2) Place the sample in a clean crucible, fix the sample with two ceramic sheets, and keep the sample vertically standing in the crucible, wherein the long side of the pre-formation aluminum foil sample is perpendicular to the bottom of the heating vessel.

[0039] (3) Place the crucible with the sample in the muffle furnace, and process it at 700-1000°C for 30 minutes.

[0040] (4) Take out the oxide film after cooling, set aside.

[0041] (5) Place the separated porous oxide film on an electronic lens for ana...

Embodiment 2

[0044] The specific operation steps are as follows:

[0045] The raw material of phosphoric acid anodized aluminum foil is taken. The surface layer of porous aluminum oxide has a micropore diameter of 70-80nm and a thickness of about 1500-2000nm.

[0046] (1) Cut the aluminum foil into samples with a width of 0.5 cm and a length of 2.5 cm.

[0047] (2) Place the sample in a clean crucible, fix the sample with two ceramic sheets, and keep the sample vertically standing in the crucible, wherein the long side of the pre-formation aluminum foil sample is perpendicular to the bottom of the heating vessel.

[0048] (3) Place the crucible with the sample in a muffle furnace, and process it at 830-840°C for 60 minutes.

[0049] (4) Take out the oxide film after cooling, set aside.

[0050] (5) The separated porous oxide film is placed in a scanning electron microscope for analysis, and a SEM photo of the microscopic appearance can be obtained, Figure 3-4 . Depend on Figure 3-4 ...

Embodiment 3

[0053] The specific operation steps are as follows:

[0054] The raw material of phosphoric acid anodized aluminum foil is taken. The surface layer of porous aluminum oxide has a micropore diameter of 70-80nm and a thickness of about 1500-2000nm.

[0055] (1) Cut the aluminum foil into samples with a width of 1.0 cm and a length of 4.0 cm.

[0056](2) Place the sample in a clean crucible, fix the sample with two ceramic sheets, and keep the sample vertically standing in the crucible, wherein the long side of the pre-formation aluminum foil sample is perpendicular to the bottom of the heating vessel.

[0057] (3) Place the crucible with the sample piece in a muffle furnace for 10 minutes at 1000°C.

[0058] (4) Take out the oxide film after cooling, set aside.

[0059] (5) Putting the separated porous oxide film into a scanning electron microscope for analysis, the microscopic appearance is good and the accuracy is high.

[0060] The method for analyzing the microscopic morp...

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Abstract

The invention relates to an analysis method for the microscopic morphology of the surface porous oxidation film of an aluminum foil. The method comprises: carrying out high-temperature melting treatment on a formation pre-treatment aluminum foil sample, forming a certain included angle between the formation pre-treatment aluminum foil sample and the bottom of a heating container during the treatment process, flowing to the lower part by aluminum liquid under the action of gravity, carrying out cooling, and separating the aluminum from the aluminium oxide to obtain a porous oxidation film; andplacing the porous oxidation film in a scanning electron microscope or an electron lens for analysis to obtain microscopic morphology parameters. According to the analysis method provided by the invention, high-temperature melting is performed on the aluminum foil having the surface with the non-acid-alkali-resistant aluminum oxide film; the aluminium oxide film is stripped; and then the analysisis performed to obtain microscopic morphology parameters, thereby providing the data support for formation mechanism study. Moreover, the stripping process is simple and is easy to control and the method is suitable for the analysis of the porous oxide film morphology of the surface layer to carry out basic research.

Description

technical field [0001] The invention specifically relates to a method for analyzing the microscopic appearance of a porous oxide film on the surface of aluminum foil. Background technique [0002] The pre-treatment of aluminum foil formation in the industry (boiling water or anodic oxidation) produces a porous oxide film with a pore size of 5-200nm and a thickness of 30-800nm. After formation, this layer of porous oxide film is partially transformed into a dense oxide film, which is used as a dielectric for electrolytic capacitors membrane. This layer of porous oxide film is closely related to the quality index of formed foil. [0003] In the prior art, the oxide film on the surface of the aluminum foil is peeled off by an alkali etching method, and then analyzed by a scanning electron microscope or an electronic lens to obtain the microscopic morphology parameters of the oxide film. However, there are the following problems: since both amorphous alumina and crystalline al...

Claims

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Application Information

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IPC IPC(8): G01N23/2251G01N23/2202G01N23/04G01N23/20G01N23/20008G01B15/04
CPCG01B15/04G01N23/04G01N23/20G01N23/2005G01N23/2202G01N23/2251
Inventor 林颖王兰东黄予涵李宏亮游彭飞张学宽李帅帅杨文峰
Owner 乌鲁木齐众荣电子材料科技有限公司
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